Sorry to go back to an older post, but I noticed it hadn't been replied to, and I think it's certainly worth looking at. Even if this point has been rehashed elsewhere.
If Trapinch was so good, why noone is using it?
Why? Because it's outclassed by Duggy, who does the job of trapping a wider range of threats. Adding Trapinch into a team with Dugtrio already on it is redundant, adds a second pure ground type with garbage defensive stats and fundamentally constrains your teambuilding immensely. So people just utilise Duggy at the moment.
If given the option between a Pokemon that deals which invalidates a range of Pokemon, while also being useful against a wider range of Pokemon, vs one that deals with specific threats very well, but is usually useless against the wider pool, I know which most people will choose. However, were we to remove only Duggy, Trapinch would potentially be utilised more. Not to the extent that Duggy is now, but enough to be an issue. The point of
theotherguytm (thanks for posting and discussing this btw) posting the Trapinch set is to highlight that there is a potential niche for another arena trap user, if we banned Duggy alone. Diglett has also been discussed at length in this thread,
peng made a solid post just recently looking at what Diglett can do if we just banned Duggy.
In all honesty, I disagree with some of the posts looking at Diglett and Trapinch. When mention is made to these Pokemon 'should never see the light of day in OU' (I think this was you if I remember correctly
Yung Dramps , apologies if I was mistaken). If a Pokemon has a niche in OU, it should be able to see usage in OU. Example, I still cannot believe something with Clef's stat spread is viable (and even one of the best mons) in OU. These are different scales of bad, but that isn't the point. If something is usable in OU, great. I couldn't care less if something like, I don't know, Pachirisu finds usage in OU. The problem here, lies in the fact that these Pokemon are viable due to their (in my opinion) uncompetitive ability.
But I digress, let's look at the other part of your opening statement Tzolkin.
It's because it is awful against everything else, if your opponent doesn't have it or one of the 4 other mons it can sort of trap, it is completely useless.
That's why he outlines it as a niche, a Pokemon which does a very specific thing which can enable other members of a team. To reiterate, part of the point of posting these sets is...
A) To highlight that two, quite frankly, 'terrible' Pokemon have theoretically viable niches in OU because of their ability that is (in my opinion) fundamentally uncompetitive.
B) Even if Dugtrio was removed as the issue here, there is a wider issue with Arena Trap as a whole, and what it can do.
C) The main thing gating usage on these mons is the presence of Duggy, which does the job better than either of these Pokemon. If Dugtrio was theoretically banned over Arena Trap as a whole, you would see these Pokemon on the ladder and even perhaps in Tour games. This would raise the question of 'is Arena Trap the issue?' and we would be right back into this kerfuffle.
To put my own point in here, I support either a quickban, or suspect test of Arena Trap. I am leaning towards a suspect test, only because there is significant enough resistance to banning Arena Trap > Dugtrio. I think it is worthwhile seeing how it goes.
Here's where I make quite an outlandish suggestion.
We do an irregular suspect test (
bolded so people can read my suggestion without needing to read the above wall of text.
I think it's pretty clear that at the very least, Dugtrio has to go. Therefore, here is my suggestion. We suspect test Arena Trap, but instead of just disallowing Arena Trap mons, we instead disallow Dugtrio, to see if Arena Trap Pokemon are still problematic in a metagame without Dugtrio. It skips the step of suspecting Dugtrio, which 100% of people in this thread agree is too much. The only issues really being raised in this thread are regarding which way we want to go on banning either AT or Duggy. So skipping the part of banning Duggy at the least, makes sense.
I understand people's desires to just get Arena Trap out ASAP; if it was just me deciding, I would quickban Arena Trap without a second thought. However, this leaves an issue of completely ignoring a vocal minority of people who want to see Dugtrio gone and not Arena Trap, and those who want Arena Trap to go through due process, which I can understand.